Field Adjustable – Dependable Protection Against Flow Variation or Stopping in Pipelines for Fluids, Gases and Flowing Solids

The SERIES V4 Flotect® Flow Switches is rugged and reliable, ideal for automatically protecting equipment and pipeline systems against damage from reduction or loss of flow. Time tested in thousands of pipeline installations and processing plants around the world this Series is Weatherproof, designed to meet NEMA 4 and Explosion-proof (listing included in specifications). This series can be used in pipes 1-1/2" and up.

Product Applications

Protects pumps, motors and other equipment against low or no flow
Controls sequential operation of pumps
Automatically starts auxiliary pumps and engines
Stops liquid cooled engines, machines and processing when coolant flow is interrupted
Shuts down burner when air flow through heating coil fails
Controls dampers according to flow

More Information

Model Chart

EXAMPLE	V4	SS-2-D-U	2	1	6	EPOXY	B1HC	Series V4-SS-2-D-U-216-EPOXY-B1HC Flotect® Vane Operated Flow Switch, 316 SS body, DPDT, universal vane, NI 200 magnet keeper and vane block material, 316SS vane, epoxy coated housing, with 2" hex type carbon steel bushing.
SERIES	V4							Flotect® Vane Operated Flow Switch
1ST SET OF OPTIONS (Select any or all)		SS 2 D U						316 SS Body (430 Magnet Keeper) -2 Style Body DPDT Universal Vane
MAGNET KEEPER VANE BLOCK MATERIAL			1 2 3					430 SST (standard) NI 200 316 SST
VANE MATERIAL				1 2 3 4 5				316 SST (standard) C20 SST Hastelloy B Hastelloy C Monel
BODY MATERIAL					1 2 3 4 5 6 7 8			Brass (standard) C20 CPVC Hastelloy B Hastelloy C 316 SST Monel PVC
2ND SET OF OPTIONS						AT EPOXY FSV HP HV IEC MT MV NACE NH PT ST SLW SW TBC TRD TRI V W		ATEX Approval Epoxy Coated Housing Full Swing Vane High Pressure Hinged Vane IECEx Approval High Temperature Gold Contacts Heat Treated Body No Housing Paper Tag Stainless Steel Tag Solvent Weld Socket Weld Terminal Block Connector Time Delay Relay, Decreasing Flow Time Delay Relay, Increasing Flow Vertical Up Flow Weld
FLANGES/BUSHINGS/ TEES/TEES & BUSHINGS							B1FC B1HC B1HB B1H4 B1HS B2FC B2F4 B2HC B2HS B2HB B4HS F2B1 F2C1 F2C3 F2C6 F2C9 F2H1 F2M1 F2S1 F2S3 F2S6 F2.5C1 F2.5C3 F2.5S1 F3C1 F3C3 F3C9 F3S1 F3S3 F4C1 F4C3 F4S1 T1B0 T1B2 T1S T1P T1CP TB2B0 TB2B2 TB2C TB2S TB2P TB2CP TB3B0 BT3P TB3CP	2" Flush Type Carbon Steel Bushing 2" Hex Type Carbon Steel Bushing 2" Hex Type Brass Bushing 2" Hex Type 304SS Bushing 2" Hex Type 316SS Bushing 2-1/2" Flush Type Carbon Steel Bushing 2-1/2" Flush Type 304SS Bushing 2-1/2" Hex Type Carbon Steel Bushing 2-1/2" Hex Type 316SS Bushing 2-1/2" Hex Type Brass Bushing 4" Hex Type 316SS Bushing 2" Hastelloy B 150# Flange 2" Carbon Steel 150# Flange 2" Carbon Steel 300# Flange 2" Carbon Steel 600# Flange 2" Carbon Steel 900# Flange 2" Hastelloy C 150# Flange 2" Monel 150# Flange 2" 316SS 150# Flange 2" 316SS 300# Flange 2" 316SS 600# Flange 2-1/2" Carbon Steel 150# Flange 2-1/2" Carbon Steel 300# Flange 2-1/2" 316SS 150# Flange 3" Carbon Steel 150# Flange 3" Carbon Steel 300# Flange 3" Carbon Steel 900# Flange 3" 316SS 150# Flange 3" 316SS 300# Flange 4" Carbon Steel 150# Flange 4" Carbon Steel 300# Flange 4" 316SS 150# Flange 1-1/2" Brass 125# Tee 1-1/2" Brass 250# Tee 1-1/2" 316SS 150# Tee 1-1/2" PVC Sch 80 Tee 1-1/2" CPVC Sch 80 Tee 2" Brass 125# Tee & Bushing 2" Brass 250# Tee & Bushing 2" Carbon Steel 2000# Tee & Bushing 2" 316SS Tee & Bushing 2" PVC Sch 80 Tee & Bushing 2" CPVC Sch 80 Tee & Bushing 3" Brass 125# Tee & Bushing 3" PVC Sch 80 Tee & Bushing 3" CPVC Sch 80 Tee & Bushing

Options

-D - DPDT contacts.
-MV - Gold Plated Contacts, options for dry circuits see electrical rating in specification, no listings or approvals).
-MT - High Temperature, option rated 400°F (204°C) see electrical rating in specifications, no listings or approvals.
-TRI - (increasing flow); -TRD - (decreasing flow), Time Delay Relay, option with 2 SPDT contacts, adjustable from 0-1 to 0-31 minutes. (no listings or approvals).
-316 - 316 SS Magnet Keeper, option to replace standard 430 SS.
-V - Vertical Up Flow, option for upward flow in vertical pipe.
-AT - Atex listed construction.
-IEC, IECEx certified construction.
-NH, No housing, has no approvals.

Specifications

Service: Gases or liquids compatible with wetted materials.
Wetted Materials: Vane: 316 SS; Body: Brass or 316 SS standard; Magnet Keeper: 430 SS standard, 316 SS optional; Options: Other materials also available, consult factory (e.g. PVC, Hastelloy, Nickel, Monel, Titanium).
Temperature Limit: -4 to 275°F (-20 to 135°C) standard, MT high temperature option 400°F (205°C) [MT option not UL, CSA, ATEX or IECEx] ATEX and IECEx options, ambient temperature -4 to 163°F (-20 to 73°C); Process temperature -4 to 163°F (-20 to 73°C).
Pressure Limit: Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar), optional 5000 psig (345 bar) available with 316 SS body and SPDT switch only.
Enclosure Rating: Weatherproof and Explosion-proof. **Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX CE 0344 EX II 2 G Ex d IIB T6 Gb -20°C≤Tamb≤73°C. -20°C≤Process Temp≤73°C. EC-Type Certificate No.: KEMA 03 ATEX 2383. ATEX Standards: EN60079-0: 2009; EN60079-1: 2007.: IECEx Certified: For Ex d IIB T6 Gb - 20°C≤Tamb≤73°C. -20°C≤Process Temp≤73°C. IECEx Certificate of Conformity: IECEx DEK 11.0071. IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007. Zone I. Also FM approved.
Switch Type: SPDT snap switch standard, DPDT snap switch optional.
Electrical Rating: UL, FM, ATEX and IECEx models 10 A @ 125/250 VAC. CSA models: 5 A @ 125/250 VAC; 5 A res., 3 A ind. @ 30 VDC . MV option: 1 A @125 VAC; 1 A res., .5 A ind. @ 30 VDC. MT option: 5 A @ 125/250 VAC. [MT and MV option not UL, CSA, FM or ATEX or IECEx].
Electrical Connections: UL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and IECEx unit: Terminal block.
Conduit Connection: 3/4" female NPT.
Process Connection: 1-1/2" male NPT.
Mounting Orientation: Within 5° of vertical for proper operation. Units for horizontal installation (vertical pipe with up flow) available.
Set Point Adjustment: For universal vane: five vane combinations.
Weight: 4 lb 8 oz (1.9 kg).
Agency Approvals: ATEX, CE, CSA, FM, IECEx, UL**.

Features

Leak proof body machined from bar stock
Choice of custom vane calibrated for your application, Model V4, or field adjustable multilayer vane, Model V4-2-U (see set point chart)
Installs directly and easily into pipeline with a threadolet, tee, or flange (see application drawings)
Can be used in pipes 1-1/2" and up
Electrical assembly can be easily replaced without removing the unit from installation so that the process does not have to be shut down
High pressure rating of 1000 psig (69 bar) with the brass body and 2000 psig (138 bar) with the 316 SS body
Unique magnetically actuated switching design gives superior performance
Features a free-swinging vane which attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm with no bellows, springs, or seals to fail

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Series V4 Flotect® Vane-Operated Flow Switch

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